amirmurray30 amirmurray30
  • 08-02-2021
  • Physics
contestada


Which two substances are elements?

A. sand and air B. salt and sand
C. iron and helium
D. helium and water

Respuesta :

benkl benkl
  • 08-02-2021
C, iron and helium are elements since they consist of only one type of atoms
Answer Link

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